Do you mean new activity stream posts as soon as these changes occur? Don't you think it will be too much from the user experience point of you? Maybe not, but if you work with files a lot - your Activity Stream will be literally spammed with such notifications.... we'll be happy to hear your arguments - for better understanding. Thanks!

i think this would nevertheless be necessary.maybe the best way to keep it user friendly is to be able to filter all these kinds of notifications.so that way if you don't want to see what's going on in the drive, you can just filter it out.or a way to "subscribe" to different notifications.